The US stock market storage chip index closed down more than 4.7%. In January, Sandisk rose about 143%, while Seagate Technology, Micron, and Western Digital all accumulated gains of over 40%.

Glonghui, January 31｜On Friday (January 30), the US stock storage chip and hardware supply chain index closed down 4.72% at 103.68 points. Among the constituent stocks, Western Digital closed down 10.12%, Seagate Technology fell 8.71%, Rambus dropped 6.39%, Lam Research fell 5.93%, Applied Materials dropped 5.57%, Micron Technology fell 4.80%, Teradyne dropped 4.30%, while Sandisk rose 6.85%. In January, Sandisk surged 142.75%, Seagate Technology rose 48.04%, Micron increased 45.36%, Western Digital rose 45.25%, Lam Research increased 36.38%, Applied Materials rose 25.42%, Teradyne increased 24.54%, and Rambus rose 23.88%. The Rate Cut Winners Index closed down 2.08% at 101.56 points, with a cumulative increase of 3.47% in January, and reached 108.47 points at the opening of the US stock market on January 16. The "Trump Tariff Losers" Index closed down 0.11% at 112.94 points, with a cumulative increase of 2.34% in January. The "Trump Financial Index" closed down 0.84% at 170.38 points, with a cumulative decline of 1.09% in January. The Retail Investors Group Concept Stocks Index/Meme Stock Index closed down 3.65% at 14.13 points, with a cumulative decline of 8.08% in January. It reached 17.09 points at the opening on January 9, then continued to fall, dropping to 14.03 points at the end of trading on the 30th.